问题的提出：编写一个长途电话计费程序，计费规则是每6秒钟0.06元，要求能输入发话地、收话地，输出话费。-Of the problem: write a long-distance telephone billing procedures, billing rules is $ 0.06 per 6 seconds, the requests can be input to the speaker, the closing words, the output calls.